flower/input.cc

   1 /*
   2  input.cc -- implement Input
   3
   4  source file of the LilyPond music typesetter
   5
   6   (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7 */
   8 #include <iostream.h>
   9 #include "flower-proto.hh"
  10 #include "input.hh"
  11 #include "string.hh"
  12 #include "source.hh"
  13 #include "source-file.hh"
  14
  15 Input::Input (Source_file*s, char const *cl)
  16 {
  17   source_file_l_=s;
  18   defined_ch_C_=cl;
  19 }
  20
  21 Input::Input ()
  22 {
  23   source_file_l_ = 0;
  24   defined_ch_C_ = 0;
  25 }
  26
  27 Input
  28 Input::spot () const
  29 {
  30   return *this;
  31 }
  32
  33 void
  34 Input::set_spot (Input const &i)
  35 {
  36   *this = i;
  37 }
  38
  39 /*
  40   Produce GNU-compliant error message.  Correcting lilypond source is
  41   such a breeze if you ('re edidor) know (s) the error column too
  42
  43   Format:
  44
  45     [file:line:column:][warning:]message
  46
  47  */
  48 void
  49 Input::message (String message_str) const
  50 {
  51   String str;
  52
  53   /*
  54     marked "Work in prgress" in GNU iostream
  55       libg++ 2.7.2.8
  56       libstdc++ 2.8.1
  57
  58     why not just return always -1 (unknown),
  59     iso breaking the interface?
  60
  61   int col = cerr.rdbuf ()->column ();
  62
  63    */
  64
  65   // well, we don't want to loose first warning...
  66   int col = 1;
  67   if (col > 0)
  68     str += "\n";
  69
  70   if (source_file_l_)
  71     str += location_str () + String (": ");
  72
  73   str += message_str;
  74   if (source_file_l_)
  75    {
  76     str += ":\n";
  77     str += source_file_l_->error_str (defined_ch_C_);
  78    }
  79   cerr << str << endl;
  80 }
  81
  82 void
  83 Input::warning (String message_str) const
  84 {
  85   message (_ ("warning: ") + message_str);
  86 }
  87 void
  88 Input::error (String s) const
  89 {
  90   message (_ ("error: ")+ s);
  91 }
  92
  93 void
  94 Input::non_fatal_error (String s) const
  95 {
  96   message (_ ("non fatal error: ") + s);
  97 }
  98 String
  99 Input::location_str () const
 100 {
 101   if (source_file_l_)
 102     return source_file_l_->file_line_column_str (defined_ch_C_);
 103   else
 104     return " (" + _ ("position unknown") + ")";
 105 }
 106
 107 String
 108 Input::line_number_str () const
 109 {
 110   if (source_file_l_)
 111     return to_str (source_file_l_->line_i (defined_ch_C_));
 112   else
 113     return "?";
 114 }
 115
 116 String
 117 Input::file_str () const
 118 {
 119   if (source_file_l_)
 120     return source_file_l_->name_str ();
 121   else
 122     return "";
 123 }
 124
 125
 126 int
 127 Input::line_number () const
 128 {
 129   if (source_file_l_)
 130     return source_file_l_->line_i (defined_ch_C_);
 131   else
 132     return 0;
 133
 134 }
 135
 136 int
 137 Input::column_number () const
 138 {
 139   if (source_file_l_)
 140     return source_file_l_->column_i (defined_ch_C_);
 141   else
 142     return 0;
 143
 144 }